Mapping the diversity of maize races in Mexico

This source preferred by Duncan Golicher

This data was imported from PubMed:

Authors: Perales, H. and Golicher, D.

http://eprints.bournemouth.ac.uk/22533/

Journal: PLoS One

Volume: 9

Issue: 12

Pages: e114657

eISSN: 1932-6203

DOI: 10.1371/journal.pone.0114657

Traditional landraces of maize are cultivated throughout more than one-half of Mexico's cropland. Efforts to organize in situ conservation of this important genetic resource have been limited by the lack of knowledge of regional diversity patterns. We used recent and historic collections of maize classified for race type to determine biogeographic regions and centers of landrace diversity. We also analyzed how diversity has changed over the last sixty years. Based on racial composition of maize we found that Mexico can be divided into 11 biogeographic regions. Six of these biogeographic regions are in the center and west of the country and contain more than 90% of the reported samples for 38 of the 47 races studied; these six regions are also the most diverse. We found no evidence of rapid overall decline in landrace diversity for this period. However, several races are now less frequently reported and two regions seem to support lower diversity than in previous collection periods. Our results are consistent with a previous hypothesis for diversification centers and for migration routes of original maize populations merging in western central Mexico. We provide maps of regional diversity patterns and landrace based biogeographic regions that may guide efforts to conserve maize genetic resources.

This data was imported from Scopus:

Authors: Perales, H. and Golicher, D.

http://eprints.bournemouth.ac.uk/22533/

Journal: PLoS ONE

Volume: 9

Issue: 12

eISSN: 1932-6203

DOI: 10.1371/journal.pone.0114657

© 2014 Perales, Golicher. Traditional landraces of maize are cultivated throughout more than one-half of Mexico's cropland. Efforts to organize in situ conservation of this important genetic resource have been limited by the lack of knowledge of regional diversity patterns. We used recent and historic collections of maize classified for race type to determine biogeographic regions and centers of landrace diversity. We also analyzed how diversity has changed over the last sixty years. Based on racial composition of maize we found that Mexico can be divided into 11 biogeographic regions. Six of these biogeographic regions are in the center and west of the country and contain more than 90% of the reported samples for 38 of the 47 races studied; these six regions are also the most diverse. We found no evidence of rapid overall decline in landrace diversity for this period. However, several races are now less frequently reported and two regions seem to support lower diversity than in previous collection periods. Our results are consistent with a previous hypothesis for diversification centers and for migration routes of original maize populations merging in western central Mexico. We provide maps of regional diversity patterns and landrace based biogeographic regions that may guide efforts to conserve maize genetic resources.

This data was imported from Web of Science (Lite):

Authors: Perales, H. and Golicher, D.

http://eprints.bournemouth.ac.uk/22533/

Journal: PLOS ONE

Volume: 9

Issue: 12

ISSN: 1932-6203

DOI: 10.1371/journal.pone.0114657

This data was imported from Europe PubMed Central:

Authors: Perales, H. and Golicher, D.

http://eprints.bournemouth.ac.uk/22533/

Journal: PloS one

Volume: 9

Issue: 12

Pages: e114657

eISSN: 1932-6203

Traditional landraces of maize are cultivated throughout more than one-half of Mexico's cropland. Efforts to organize in situ conservation of this important genetic resource have been limited by the lack of knowledge of regional diversity patterns. We used recent and historic collections of maize classified for race type to determine biogeographic regions and centers of landrace diversity. We also analyzed how diversity has changed over the last sixty years. Based on racial composition of maize we found that Mexico can be divided into 11 biogeographic regions. Six of these biogeographic regions are in the center and west of the country and contain more than 90% of the reported samples for 38 of the 47 races studied; these six regions are also the most diverse. We found no evidence of rapid overall decline in landrace diversity for this period. However, several races are now less frequently reported and two regions seem to support lower diversity than in previous collection periods. Our results are consistent with a previous hypothesis for diversification centers and for migration routes of original maize populations merging in western central Mexico. We provide maps of regional diversity patterns and landrace based biogeographic regions that may guide efforts to conserve maize genetic resources.

The data on this page was last updated at 04:55 on April 21, 2019.